DOPPLER ARTERIAL LOWER LIMB - RIGHT ULTRASOUND SCAN
Also Known As
SENIOR
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Certified Labs
NABH Accredited
Reports in
6hrs
Measures
No description available
Identifies
No identification information available
About The Test
- Purpose: Map the speed and direction of blood flow in arteries from groin to ankle
- Non-invasive: No needles, no incisions
- Radiation-free: Uses harmless sound waves, safe for pregnant women and children
What is a Doppler Arterial Lower Limb - Right Ultrasound Scan?
Doppler ultrasound measures how red blood cells move through your arteries.
A small handheld probe (transducer) sends high-frequency sound waves into the right leg. As the waves bounce back, a computer converts them into colour images and audible sounds that reveal:
- Narrowed areas (stenosis)
- Blocked vessels (occlusion)
- Abnormal waveforms suggesting poor perfusion
Types of Doppler Arterial Lower Limb - Right Ultrasound Scan
Type | What It Shows | Use Case |
---|---|---|
Color Doppler | Direction & speed of blood flow in colour | Quick overview of blockages |
Power Doppler | Low-velocity flow in small vessels | Detects collateral circulation |
Spectral Doppler | Waveform graphics (PSV, EDV, RI) | Quantifies degree of stenosis |
List of Parameters
We record:
- Peak Systolic Velocity (PSV) – highest speed during heart contraction
- End-Diastolic Velocity (EDV) – residual speed when heart relaxes
- Resistive Index (RI) – (PSV-EDV)/PSV; high RI indicates distal obstruction
- Ankle-Brachial Index (ABI) – ankle systolic pressure ÷ arm systolic pressure; <0.9 suggests PAD
Why This Test
- Evaluate unexplained leg pain or cramps
- Monitor known peripheral artery disease (PAD) for progression
- Check patency of bypass grafts or stents post-surgery
When to Take Test
See Cadabams Diagnostics if you have:
- Leg pain or cramping while walking (intermittent claudication)
- Cold, pale, or bluish foot
- Slow-healing ulcers or wounds on toes
High-risk groups: - Diabetes mellitus
- Smokers (current or former)
- Hypertension or high cholesterol
- History of heart disease or stroke
Benefits
Benefits of Taking the Doppler Arterial Lower Limb - Right Ultrasound Scan
- Early detection of blockages before gangrene or amputation
- Guides treatment planning: angioplasty, medication, lifestyle changes
- Prevents limb-threatening complications by timely intervention
Illnesses Diagnosed with Doppler Arterial Lower Limb - Right Ultrasound Scan
- Peripheral Artery Disease (PAD)
- Arterial stenosis or occlusion
- Diabetic vasculopathy
- Popliteal artery entrapment syndrome
Preparing for test
- Fasting: Usually not required
- Clothing: Wear loose shorts or skirt; you may need to undress from waist down
- Skin: Remove lotions, oils, or talcum powder from the right leg
Pre-requisites Doppler Arterial Lower Limb - Right Ultrasound Scan
- Bring a list of current medications
- Inform staff of recent vascular surgery or stents
- Notify if you have open ulcers or wounds so we can cover them properly
Best Time to Take the Doppler Arterial Lower Limb - Right Ultrasound Scan
- Morning slots reduce leg swelling from daily activity
- When symptoms flare up—pain, cramping, or colour changes—yields most accurate results
Eligibility
- Adults aged 18 and above with leg symptoms or risk factors
- Elderly patients (no upper age limit)
- Pregnant women (safe for mother and foetus)
- Not ideal for patients with extensive leg casts that block access
Procedure for Taking a Doppler Arterial Lower Limb - Right Ultrasound Scan
Step 1: Lie flat on the examination table; legs slightly apart
Step 2: A warm gel is applied to the right groin, thigh, knee, and ankle
Step 3: The transducer is glided along the skin; you’ll hear whooshing sounds
Step 4: Gentle pressure checks each artery segment; total time 20–30 minutes
Caution Before Taking the Test
- Tell the technician about non-healing ulcers—we’ll use sterile gel
- Mention recent angioplasty or bypass so we avoid fresh incisions
- Bring compression stockings you wear daily; we may ask you to remove them
Test Results
Results and Interpretations
Finding | What It Means | Clinical Significance |
---|---|---|
Normal triphasic waveform | Healthy, elastic artery | No action needed |
Biphasic/monophasic waveform | Early to moderate stenosis | Lifestyle changes ± medication |
Raised PSV (>180 cm/s) | >50 % stenosis | May need angiography |
Absent flow signal | Total occlusion | Urgent vascular referral |
ABI <0.9 | Peripheral artery disease | Risk factor modification |
Risks & Limitations
Minimal Risks
- No radiation exposure
- No iodine contrast dye, so no allergy risk
Possible Limitations
- Operator dependency: Accuracy depends on technician skill
- Obesity: Extra tissue can scatter sound waves
- Severe calcification: Hardened arteries may hide true flow
FAQs
How long does the scan take?
About 20–30 minutes from check-in to check-out.
Is the test painful?
No. You may feel gentle pressure from the probe—no needles or incisions.
Do I need to stop medications beforehand?
Generally no. Continue blood thinners, diabetes, or hypertension drugs unless told otherwise.
When will I get the results?
Same day for routine scans; critical findings are shared immediately.
Can I drive home after the scan?
Yes. There are no sedatives or restrictions on driving.